Specifications
Troubleshooting
Maintenance and Service Guide 2–15
Flowchart 2.5—No Power, Part 4
Y
N
Continued from
“Flowchart 2.4—No 
Power, Part 3”
Reseat loose
components and
boards and 
replace damaged 
items.
Open
notebook.
Loose or
damaged
parts?
Y
Close
notebook and
retest.
Power on?
Done
N
Replace the following items (if applicable) in the 
order given. Check notebook operation after each 
of the following two replacement steps:
1. Internal DC-DC converter, processor, and 
system board*
2. Internal AC adapter
*NOTE: Replace these items as a set to prevent 
shorting out among components.










